Samsung HT-C550 Service Manual page 72

4-1-5 HDMI Video
Analog (Composite)
Video OK but HDMI
Check Pin 117, 118, 120,
121, 123, 124, 126, 127
 Refer to wave pattern
image of Fig. 4-11.
Check IC11 power
Check if 480p output
Check Voltage pin110
Replace MPEG IC
Samsung Electronics
Check jack Input.
1
of IC10
No
Check AMP input.
(3.3V)
No
Check MPEG Ouput.
Is ok.
No
pin of IC10
(1.5V~1.8V)
No
Check HDMI POWER
Yes
(PLL_3.3V, VDD1.2v)
Yes
Check 3.3V power lines
Yes
Replace MPEG IC
Check PLL3.3V lines and
Yes
VDD1.2V lines and R150,
R151, R152 value.
Yes
Please, Call to Samsung
A/S Center.
Troubleshooting
supply.
4-15